Optical assembly and optical module suitable for cross-medium application

Abstract

The utility model relates to an optical assembly and an optical module suitable for cross-medium application, the optical assembly comprises an optical fiber array module and a packaging box, the packaging box is provided with an optical window, the optical window comprises an optical channel and a lens for sealing the optical channel, the optical assembly is characterized by further comprising a sleeve with an internal channel, one end of the sleeve is hermetically connected with the packaging box, and the other end of the sleeve is hermetically connected with the optical fiber array module. The sleeve covers the optical channel, the internal channel corresponds to the optical channel, the optical fiber array module is inserted into the sleeve, and the optical fiber array module corresponds to the optical channel; according to the optical assembly, the sealing effect between the optical fiber array module and the packaging box can be effectively improved, the air tightness is remarkably improved, other external media are difficult to enter the space between the optical fiber array module and the optical window, interference on signal transmission is avoided, the optical assembly can be suitable for cross-medium application, and the application range is wide. And the stability and the reliability can be ensured in cross-medium application.

Description

Technical Field

[0001] The utility model relates to the technical field of optical communication equipment, and in particular to an optical component suitable for cross-medium applications. Background Art

[0002] In recent years, AI models represented by ChatGPT have demonstrated strong autonomous learning capabilities, and their training and reasoning require strong computing support. The development of AI models has directly driven the development of data centers and high-speed data communication optical modules. With the development of optoelectronic devices and the improvement of integration, the demand for high-bandwidth, high-speed and small-sized optical modules is also increasing. In order to adapt to different scenarios, the packaging method of optical modules is also constantly evolving. While maintaining a smaller size, power consumption is constantly increasing.

[0003] The optical modules of data centers are constantly upgraded, and the traffic data is growing rapidly, which continuously promotes the upgrade and innovation of data center architecture. With the deployment of large-scale 400G high-speed ports, 800G interconnection in data centers will also become a new demand. The development of today's AI big models has directly driven the demand for intelligent computing centers in data centers. Intelligent computing centers provide powerful training and reasoning computing power for AI. With the continuous expansion of data centers and the continuous improvement of computing power, the power density of cabinets will also increase accordingly, and the temperature control field of data centers will also change. It will be a general trend for traditional air cooling to be replaced by immersion liquid cooling.

[0004] The development trend of immersion liquid cooling will also drive the demand for BOX packaging modules. Although COB packaging devices are cheaper in cost, their optical devices and optical chips are directly exposed to the environment. Although they can be partially airtightly packaged, compared with BOX packaging, the optical devices are completely sealed in a packaging box filled with dry nitrogen. Its good sealing can isolate the influence of liquid cooling materials on optical devices, which is perfectly adapted to future packaging trends.

[0005] The biggest advantage of BOX packaging is its huge development potential in high-precision sealing. It has the advantages of good moisture resistance, small thermal expansion coefficient and high thermal conductivity under the premise of complete sealing. Its sealing characteristics perfectly adapt to the development trend of liquid cooling. However, in multi-channel application scenarios, some good solutions are still needed for the sealing problem of multi-fibers. For example, in existing multi-fiber optical modules (for example, 400G DR4 optical modules are equipped with 8 optical fibers, and 800G DR8 optical modules are equipped with 16 optical fibers), multiple fibers are usually arranged in arrays to form one or more fiber array modules. The existing optical module usually includes an optical sub-module (Optical Subassembly, OSA) and an electronic sub-module (Electrical Subassembly, ESA) in terms of product architecture, wherein the optical sub-module is a key component for realizing photoelectric conversion, and the optical sub-module usually includes a transmitter optical sub-module (TOSA, mainly used to convert electrical signals into optical signals), a receiver optical sub-module (ROSA, mainly used to convert optical signals into electrical signals) and a bi-directional optical sub-assembly (BOSA). The optical sub-module is usually packaged in a packaging box (i.e., BOX, and usually made of metal) using BOX packaging technology, and one side of the packaging box is provided with an optical window for signal passage, and the end of the optical fiber array module is usually connected to the optical window to realize signal transmission between the optical fiber and the optical sub-module in the packaging box. However, this assembly structure in the optical module does not take into account the sealing between the optical fiber array module and the optical window, and in actual optical module products, it is difficult to achieve a good sealing effect between the optical fiber array module and the optical window (especially when there are manufacturing errors and assembly errors). Therefore, when the optical module is used in other media, such as immersion liquid cooling, other media can easily enter between the optical fiber array module and the optical window. The different refractive indices of the media will affect the signal transmission between the optical fiber array module and the optical sub-module, resulting in the existing optical module being unsuitable for cross-media applications, which needs to be solved urgently. Utility Model Content

[0006] The first aspect of the utility model aims to solve the problem that the assembly structure between the fiber array module and the packaging box in the existing optical module does not consider sealing, and in the actual optical module product, it is also difficult to achieve a good sealing effect between the fiber array module and the optical window, resulting in that when cross-media applications are performed, it is easy to enter between the fiber array module and the optical window and interfere with signal transmission. Provided is an optical component suitable for cross-media applications, which can effectively improve airtightness and reliability, and the main concept is:

[0007] An optical component suitable for cross-media applications includes a fiber array module and a packaging box, the packaging box is configured with a light window, the light window includes a light channel and a lens that closes the light channel, and also includes a sleeve with an internal channel, one end of the sleeve is sealed and connected to the packaging box, the sleeve covers the light channel, the internal channel corresponds to the light channel, the fiber array module is inserted into the sleeve, and the fiber array module corresponds to the light channel. In this solution, by configuring the sleeve and sealing one end of the sleeve to the packaging box, other media from the outside are prevented from entering the sleeve through the gap between the sleeve and the packaging box. Since the internal channel of the sleeve corresponds to the light channel, the sleeve can be used to effectively improve the sealing effect at the light window; by inserting the fiber array module into the sleeve, the sealing position of the fiber array module and the sleeve is further away from the light window, which is also conducive to achieving a better sealing effect; by corresponding the fiber array module to the light channel, the fiber array module can smoothly transmit signals with the optical sub-module in the packaging box. Compared with existing products, such a design can effectively improve the sealing effect between the optical fiber array module and the packaging box, significantly improve the airtightness, and it is difficult for other external media to enter between the optical fiber array module and the optical window, thereby not interfering with the transmission of signals. This makes the optical component suitable for cross-media applications and can ensure stability and reliability in cross-media applications.

[0008] Furthermore, the sleeve is a metal sleeve, which can simplify the process and improve reliability.

[0009] Furthermore, the sleeve is welded to the side wall of the packaging box, and the gap between the sleeve and the packaging box is sealed by filling glue. Not only is the mass production / material process relatively mature, the sleeve is stably connected, and the cost is low, but the sealing effect between the sleeve and the packaging box can be effectively improved, and the airtightness is better.

[0010] Preferably, glue is filled between the optical fiber array module and the sleeve to achieve sealing. With this solution, on the one hand, glue can be used to achieve sealing to prevent other external media from entering between the optical fiber array module and the lens through the gap between the inner wall of the sleeve and the optical fiber array module; on the other hand, glue can be used to firmly fix the optical fiber array module to the sleeve, and the sleeve to the packaging box, thereby achieving the purpose of effectively fixing the optical fiber array module.

[0011] The second aspect of the utility model is to solve the problem of facilitating the sealed connection between the sleeve and the packaging box. Furthermore, the outer side of the sleeve is configured with a circle of annular flange protruding outward, and the annular flange is used to fit the side wall of the packaging box. With such a design, on the one hand, the annular flange can be used to increase the contact area between the sleeve and the packaging box, which is more conducive to achieving a better sealing effect through welding and other means. On the other hand, the annular flange is surrounded by a circle along the outer side of the sleeve, so that the sealing effect can be enhanced along the circumferential direction of the sleeve, effectively preventing the problem of leakage.

[0012] The third aspect of the utility model aims to solve the problem of simplifying the process and improving the sealing performance. Furthermore, an annular boss is constructed inside a side surface of the annular flange for contacting the packaging box, and the annular boss is used to contact the side wall of the packaging box. By configuring the annular boss on one side surface of the annular flange, the side surface is uneven, so that the annular boss can be used to contact the side wall of the packaging box during welding. At this time, other areas of the side surface do not contact the side wall of the packaging box and have a certain gap. Such a structure is convenient for laser welding and is conducive to achieving a better sealing effect.

[0013] In some solutions, the sleeve includes a first barrel adapted to the optical fiber plug assembly in the optical fiber array module, and a second barrel adapted to the optical channel, the annular flange is constructed at one end of the first barrel, and the second barrel is connected to the end. During assembly, the second barrel of the sleeve can be inserted into the optical channel on the side of the packaging box, so that the annular flange fits the side wall of the packaging box, so as to seal and weld the annular flange to the side wall of the packaging box, and the optical fiber plug assembly in the optical fiber array module can be adapted to the first barrel. During assembly, the optical fiber plug assembly is inserted into the sleeve through the end of the first barrel, so as to ensure that the optical fiber plug assembly is facing the optical window. Finally, glue is filled between the optical fiber plug assembly and the inner side wall of the first barrel to seal, thereby solving the sealing problem between the optical fiber plug assembly and the optical window.

[0014] In some solutions, the annular flange is constructed at one end of the sleeve, which is convenient for covering the light channel with the sleeve and for adapting to light windows of different structures, thus meeting the sealing requirements of more occasions.

[0015] In some schemes, the light window also includes a light window boss arranged on the outside of the packaging box, the light channel runs through the light window boss, one end of the sleeve is configured with an inner cavity adapted to the light window boss, the annular flange is configured at the end, the internal channel is connected to the inner cavity, the light window boss is inserted into the inner cavity, the sleeve covers the light window boss, and the optical fiber array module is inserted into the inner channel. In this scheme, by configuring the inner cavity adapted to the light window boss in the packaging box, when the annular flange abuts against the side wall of the packaging box during assembly, the light window boss on the side of the packaging box is just inserted into the inner cavity, so that the sleeve can cover the entire light window boss, which is conducive to achieving a better sealing effect. In addition, during assembly, through the cooperation of the inner cavity and the light window boss, the sleeve can also play a role in positioning and guiding during the assembly process of the sleeve, which is not only convenient for assembly, but also can improve the assembly accuracy of the sleeve, thereby facilitating the assembly accuracy of the optical fiber array module, so that the optical fiber array module can face the optical channel on the inner side of the light window boss.

[0016] Preferably, the sleeve includes a first cylinder adapted to the optical fiber array module, and a second cylinder adapted to the light window boss, the first cylinder is connected to the second cylinder, the internal channel is constructed in the first cylinder, the inner cavity is constructed in the second cylinder, and the annular flange is constructed at the end of the second cylinder.

[0017] Preferably, the first cylinder is a flat structure, and the second cylinder is a flat structure, which can better adapt to the optical fiber array module and the light window boss, and is conducive to saving materials and costs.

[0018] In some embodiments, the optical fiber array module includes an optical fiber plug assembly connected to the optical fiber, and the optical fiber plug assembly is inserted into the sleeve and corresponds to the optical channel.

[0019] In some solutions, the optical fiber array module includes an upper constraint plate, a lower constraint plate, and at least one optical fiber, and the optical fiber is clamped between the upper constraint plate and the lower constraint plate, which is conducive to the side-by-side arrangement of multiple optical fibers.

[0020] An optical module suitable for cross-media applications includes a base and a cover plate, and also includes the optical component, the cover plate is arranged on the base, an assembly cavity is formed between the cover plate and the base, the optical fiber array module and the packaging box are respectively arranged in the assembly cavity, and an optical sub-module is packaged in the packaging box; the optical sub-module includes an optical transmitting sub-module and / or an optical receiving sub-module. The base and the cover plate are used to support and protect components such as the optical fiber array module and the packaging box.

[0021] Preferably, at least two optical components are included, and the packaging boxes of the optical components are arranged in an overlapping manner, which is beneficial to saving space in the assembly cavity, making the structure more compact and the layout more reasonable.

[0022] Compared with the prior art, the optical component and optical module suitable for cross-media applications provided by the utility model can effectively improve the sealing effect between the optical fiber array module and the packaging box, significantly improve the airtightness, and make it difficult for other external media to enter between the optical fiber array module and the optical window, thereby not interfering with the transmission of signals, so that the optical component can be suitable for cross-media applications and can ensure stability and reliability in cross-media applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic structural diagram of a sleeve in an optical component provided in Example 1 of the utility model.

[0025] Figure 2 This is a schematic diagram of the partial structure of a 400G DR4 optical module provided in Example 1 of the utility model.

[0026] Figure 3 for Figure 2 Cross-sectional view at AA in the middle.

[0027] Figure 4 for Figure 3 Cross-sectional view at the middle BB.

[0028] Figure 5 This is a schematic structural diagram of a packaging box provided in Example 2 of the utility model.

[0029] Figure 6 This is a schematic diagram of the structure of an optical fiber array module provided in Example 2 of the utility model.

[0030] Figure 7 This is one of the structural schematic diagrams of a sleeve provided in Example 2 of the utility model.

[0031] Figure 8 This is the second structural schematic diagram of a sleeve provided in Example 2 of the utility model.

[0032] Fig. 9 This is a schematic diagram of the partial structure of an 800G DR8 optical module provided in Example 2 of the utility model.

[0033] Fig.10 for Fig. 9 Cross-sectional view at CC.

[0034] Fig.11 for Fig.10 Cross-sectional view at DD in the middle.

[0035] Fig.12 This is a schematic structural diagram of a sleeve in an optical component provided in Example 3 of the utility model.

[0036] Fig.13 This is a schematic structural diagram of another sleeve in an optical component provided in Example 3 of the utility model.

[0037] Fig.14 for Fig.13 Top view of the .

[0038] Markings in the figure are as follows: base 11, cover plate 12; fiber array module 2, fiber plug assembly 21, optical fiber 22, upper constraint plate 23, lower constraint plate 24; packaging box 3, light window 31, light channel 32, lens 33, light window boss 34; sleeve 4, first cylinder 41, second cylinder 42, annular flange 43, internal channel 44, inner cavity 45, annular boss 46; glue 5. DETAILED DESCRIPTION

[0039] The technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the utility model.

[0040] Example 1

[0041] This embodiment provides an optical module suitable for cross-media applications, including a base 11, a cover plate 12, an optical component, an electronic submodule, etc., wherein the optical component includes an optical fiber array module 2 and a packaging box 3, wherein:

[0042] The cover plate 12 is usually detachably arranged on the base 11 by fasteners such as bolts, so that an assembly cavity for accommodating other devices is formed between the cover plate 12 and the base 11, for example, Figure 2-Figure 4 As shown, the optical component and the electronic submodule are usually disposed in the assembly cavity.

[0043] In this embodiment, an optical submodule is usually packaged in the packaging box 3, so that the optical submodule can be packaged in BOX by using the packaging box 3, and the influence of liquid cooling medium on the optical submodule can be effectively isolated. In implementation, according to the different functions and models of the optical module, the optical submodule can usually include a combination of one or more of an optical transmitting submodule, an optical receiving submodule, and an optical transmitting and receiving submodule, and each module is usually packaged in a different packaging box 3, wherein the optical transmitting submodule (i.e., TOSA) is mainly used to convert electrical signals into optical signals, the optical receiving submodule (i.e., ROSA) is mainly used to convert optical signals into electrical signals), and the optical transmitting and receiving submodule (i.e., BOSA) can convert electrical signals into optical signals and optical signals into electrical signals. In this embodiment, the electronic submodule usually includes a circuit board and a chip, etc., and the optical submodule is usually electrically connected to the electronic submodule. The optical submodule is usually connected to the optical fiber array module 2, and the optical fiber array module 2 is connected to the optical fiber interface set on the base 11 through the optical fiber 22. In actual use, the signal generated in the optical module can be transmitted to the optical fiber interface via the optical fiber array module 2 in sequence, and transmitted out via the external optical fiber connected to the optical fiber interface, and the signal transmitted from the external optical fiber can be transmitted to the optical receiving submodule via the external optical fiber, the optical fiber interface, the optical fiber 22, and the optical fiber array module 2 in sequence.

[0044] During implementation, since different optical submodules can be packaged in different packaging boxes 3, one or more optical components may be configured in the optical module. During implementation, when at least two optical components are configured in the optical module, the packaging boxes 3 of each optical component may be preferentially arranged in an overlapping manner, which is beneficial to saving space in the assembly cavity, making the structure more compact and the layout more reasonable. During implementation, the packaging boxes 3 (optical components) that package the same module may be arranged horizontally on the same layer, and the packaging boxes 3 (optical components) that package different modules may be arranged in an overlapping manner in the height direction. For example, the packaging boxes 3 that package the optical transmitting submodule may be arranged on the same layer, and the packaging boxes 3 that package the optical transmitting submodule may be arranged in an overlapping manner with the packaging boxes 3 that package the optical receiving submodule, such as Figure 2-Figure 4 As shown, it is more convenient to arrange the optical fiber 22 and the optical fiber array module 2.

[0045] In this embodiment, a light window 31 is disposed on one side of the packaging box 3. Figure 4 and Figure 5As shown, the optical fiber array module 2 transmits signals to the optical sub-module in the packaging box 3 through the optical window 31. In implementation, the number of the optical windows 31 can be one, two or more. In this embodiment, the optical window 31 includes an optical channel 32 and a lens 33 that closes the optical channel. The optical channel 32 runs through the side wall of the packaging box 3. In some embodiments, the outer surface of the lens 33 can be flush with the outer surface of the side wall of the packaging box, while in other embodiments, the outer surface of the lens 33 and the outer surface of the side wall of the packaging box can have a certain gap, that is, the lens 33 can be arranged on the inner side of the optical channel 32, such as Figure 4 shown.

[0046] In order to improve the sealing between the optical fiber array module 2 and the packaging box 3, the optical module provided in this embodiment further includes a sleeve 4. Figure 1 and Figure 7 As shown, the sleeve 4 is a hollow structure so that an internal passage 44 is formed in the sleeve 4 that passes through both ends. Figure 4 and Fig.11 As shown, one end of the sleeve 4 is sealed and connected to the packaging box 3, and the sleeve 4 is used to cover the light channel 32, and the internal channel 44 corresponds to the light channel 32 to prevent other external media (such as liquid, etc.) from entering the sleeve 4 through the gap between the sleeve 4 and the packaging box 3. Since the internal channel 44 of the sleeve 4 corresponds to the light channel 32, the sleeve 4 can be used to effectively improve the sealing effect at the light window 31. Figure 4 and Fig.11 As shown, the optical fiber array module 2 is inserted into the sleeve 4, and glue 5 is filled between the inner side wall of the sleeve 4 (i.e., the side wall of the internal channel 44) and the optical fiber array module 2 to achieve sealing. On the one hand, the glue 5 can be used to achieve sealing to prevent other external media from entering between the optical fiber array module 2 and the light window 31 through the gap between the inner side wall of the sleeve 4 and the optical fiber array module 2, and due to the configuration of the sleeve 4, the sealing position of the optical fiber array module 2 and the sleeve 4 is farther away from the light window 31, which is conducive to achieving a better sealing effect. On the other hand, the glue 5 can be used to firmly fix the optical fiber array module 2 to the sleeve 4, and the sleeve 4 is fixed to the packaging box 3, so as to achieve the purpose of effectively fixing the optical fiber array module 2. By matching the optical channel 32 and the lens 33 with the optical fiber array module 2, the optical fiber array module 2 can smoothly transmit signals with the optical sub-module in the packaging box 3. Compared with existing optical module products, this optical module can effectively improve the sealing effect between the optical fiber array module 2 and the packaging box 3, significantly improve the airtightness, can be suitable for cross-media applications, and can ensure stability and reliability in cross-media applications.

[0047] In implementation, the material of the sleeve 4 can be determined according to actual needs. In this embodiment, the sleeve 4 is a metal sleeve 4, which is convenient for simplifying the process and improving reliability. Of course, in implementation, the sleeve 4 can also be made of non-metallic materials, such as a plastic sleeve 4, etc., which will not be illustrated one by one here.

[0048] During implementation, the sleeve 4 and the sealing box can be sealed by glue, threaded connection, etc., and in the preferred implementation manner provided in this embodiment, the sleeve 4 is a metal sleeve 4, which is welded to the packaging box 3 (that is, the packaging box 3 also adopts a metal box), and the metal sleeve 4 and the packaging box 3 can be sealed by welding, but the process of achieving sealing by welding is relatively difficult. Therefore, in a further implementation manner, the sleeve is connected to the side wall of the packaging box by welding, and the gap between the sleeve and the packaging box is sealed by filling with glue. Not only is the mass production / material process relatively mature, the connection is reliable, and the cost is low, but the sealing effect between the metal sleeve 4 and the packaging box 3 can also be effectively improved, and the airtightness is better.

[0049] During implementation, the glue 5 can be a sealant commonly used in the prior art. In the present embodiment, the glue 5 is preferably epoxy resin, which is beneficial to achieve a better sealing effect between the inner wall of the sleeve 4 and the optical fiber array module 2, thereby facilitating improving the airtightness between the optical fiber array module 2 and the optical window 31.

[0050] In order to facilitate the sealed and reliable connection between the sleeve 4 and the packaging box 3, in a further embodiment, the outer side of the sleeve 4 is configured with a ring-shaped flange 43 protruding outward, such as Figure 1 , Figure 7 and Figure 8 As shown, the thickness of the annular flange 43 can be determined according to actual needs. For example, the thickness of the annular flange 43 can be controlled to be 1-10 mm, and the width of the annular flange 43 in the radial direction can be greater than its thickness, so that the annular flange 43 can form a plate-like structure. During assembly, the annular flange 43 is mainly used to fit the side wall of the packaging box 3. In this way, on the one hand, the annular flange 43 can be used to increase the contact area between the sleeve 4 and the packaging box 3, which is more conducive to achieving a reliable connection through welding and other means. On the other hand, the annular flange 43 is surrounded by the outer side of the sleeve 4, which is more conducive to filling glue, so that the sealing effect can be enhanced along the circumferential direction of the sleeve 4, effectively preventing leakage. It can be understood that during implementation, the annular flange 43 can also be configured to have other thicknesses, which will not be illustrated one by one here.

[0051] Since the structures of the optical windows 31 in optical modules of different models are different, correspondingly, during implementation, the structure of the sleeve 4 will also be adaptively improved. For example, when the optical fiber array module 2 includes an optical fiber plug assembly 21 connected to the optical fiber 22, the optical fiber plug assembly 21 can be directly inserted into the sleeve 4, and corresponding to the optical channel 32, the inner wall of the sleeve 4 and the optical fiber plug assembly 21 can be sealed by glue 5. The optical fiber plug assembly 21 can use the existing optical fiber plug assembly 21. At this time, the number of optical windows 31 can be one or more. When multiple optical windows 31 are configured, the optical channels 32 of each optical window 31 can be preferentially arranged in an array. At this time, the sleeve 4 may include a first cylinder 41 adapted to the optical fiber plug assembly 21 in the optical fiber array module 2, and a second cylinder 42 adapted to the optical channel 32 in the packaging box 3, such as Figure 1 As shown, the annular flange 43 is constructed at one end of the first cylinder 41, and the second cylinder 42 is connected to the end. Figure 1 As shown, during assembly, the second barrel 42 of the sleeve 4 can be inserted into the optical channel 32 on the side of the packaging box 3, so that the annular flange 43 fits the side wall of the packaging box 3, as shown in FIG. Figure 4 As shown, the annular flange 43 is welded to the side wall of the packaging box 3, and the optical fiber plug assembly 21 in the optical fiber array module 2 can be adapted to the first cylinder 41. During assembly, the optical fiber plug assembly 21 is inserted into the sleeve 4 through the end of the first cylinder 41 to ensure that the optical fiber plug assembly 21 is facing the light window 31. Finally, glue 5 is filled between the optical fiber plug assembly 21 and the inner side wall of the first cylinder 41 for sealing. Figure 3 and Figure 4 Based on this, as an example, this embodiment also provides a 400G DR4 optical module, in which the optical fiber array module 2 adopts an optical fiber plug assembly 21, and at the same time, the optical module includes two optical components, the two optical components respectively include four optical fiber array modules 2, four sleeves and a packaging box 3, one side of the packaging box 3 is configured with four light windows, the packaging boxes 3 of the two optical components are respectively provided with an optical transmission sub-module and an optical receiving sub-module, and the packaging boxes 3 of the two optical components are overlapped in the height direction, as shown in FIG. Figure 2-Figure 4 As shown, the four optical fiber array modules 2 of the optical component are respectively inserted into the four sleeves 4, and the optical fiber array module 2 and the sleeve 4 are sealed by glue. The four sleeves 4 of the optical component are respectively welded to the corresponding packaging box 3 and sealed by glue. The four optical fiber array modules 2 are arranged in an array, as shown in FIG. Figure 2-Figure 4 As shown, a 400G DR4 optical module suitable for cross-media applications can be realized.

[0052] In a further solution, the length of the first cylinder 41 in the sleeve 4 can be constructed to be greater than the length of the optical fiber array module 2. During implementation, the end of the optical fiber array module 2 that is away from the light window 31 can also be received in the sleeve 4 and sealed with glue 5, which is conducive to achieving a better sealing effect.

[0053] Example 2

[0054] Since the structures of the light windows 31 in the optical modules of different models are different, accordingly, in the implementation, the structure of the sleeve 4 in the optical component will also be adaptively improved. For example, the optical fiber array module 2 in the optical component may include an upper constraint plate 23, a lower constraint plate 24 and at least one optical fiber 22, and the optical fiber 22 is clamped between the upper constraint plate 23 and the lower constraint plate 24. In the implementation, the number of optical fibers 22 in the optical fiber array module 2 may be one, two or more. When the optical fiber array module 2 is configured with at least two optical fibers 22, each optical fiber 22 can be arranged in an array and clamped between the upper constraint plate 23 and the lower constraint plate 24, such as Figure 6 As shown, the optical fiber array module 2 forms a whole. At this time, the annular flange 43 can be constructed at one end of the sleeve 4.

[0055] As an example, when the light window 31 includes an optical channel 32 and a lens 33 that closes the optical channel, the optical channel 32 passes through the side wall of the packaging box 3, and the light window 31 is not provided with a light window boss 34 that protrudes from the side wall of the packaging box. At this time, the optical fiber array module 2 can be inserted into the sleeve 4 from one end of the sleeve 4, and the annular flange 43 at the other end of the sleeve 4 can directly abut against the side wall of the packaging box 3 and be sealed and connected to the side wall of the packaging box 3. The optical channel 32 is located on the inner side of the annular flange 43, so as to achieve the purpose of covering the entire optical channel with the sleeve 4. At this time, there is no need to insert the sleeve 4 into the optical channel 32, that is, at this time, the sleeve 4 in the optical module includes a first barrel 41 adapted to the optical fiber array module 2, the internal channel 44 is constructed in the first barrel 41, and the annular flange 43 is constructed at the end of the first barrel 41.

[0056] As another example, when the light window 31 includes not only the light channel 32 and the lens 33 that closes the light channel, but also includes a light window boss 34 disposed on the outside of the packaging box and a light window boss 34 disposed on the inside of the packaging box 3, the light channel 32 passes through the two light window bosses 34, so that the two light window bosses 34 are connected through the light channel 32, and the lens 33 is disposed in the light channel 32 to close the light channel 32, such as Figure 5 Based on this, in the optical module provided in this embodiment, one end of the sleeve 4 is also configured with an inner cavity 45 adapted to fit the optical window boss 34 in the packaging box 3, as shown in FIG. Figure 7 and Figure 8As shown, the annular flange 43 is constructed at this end, and the internal channel 44 is connected to the inner cavity 45. During assembly, the light window boss 34 is inserted into the inner cavity 45, and the sleeve 4 covers the light window boss 34. Figure 9-11 As shown, the optical fiber array module 2 is inserted into the internal channel 44.

[0057] During implementation, the upper restraining plate 23 is preferably made of a glass plate, and correspondingly, the lower restraining plate 24 is also preferably made of a glass plate. The upper restraining plate 23 and the lower restraining plate 24 can be connected together by glue.

[0058] In this embodiment, by configuring the inner cavity 45 adapted to the light window boss 34 in the packaging box 3, when the annular flange 43 is against the side wall of the packaging box 3, the light window boss 34 on the side of the packaging box 3 is just inserted into the inner cavity 45, so that the sleeve 4 can cover the entire light window boss 34, which is conducive to achieving a better sealing effect. In addition, during assembly, through the cooperation of the inner cavity 45 and the light window boss 34, the sleeve 4 can also play a positioning and guiding role in the assembly process, which is convenient for assembly and can improve the assembly accuracy of the sleeve 4, thereby facilitating the assembly and improving the assembly accuracy of the optical fiber array module 2, so that the optical fiber array module 2 can face the optical channel 32 inside the light window boss 34.

[0059] In a preferred embodiment, the sleeve 4 includes a first barrel 41 adapted to the optical fiber array module 2, and a second barrel 42 adapted to the optical window boss 34, and the first barrel 41 is connected to the second barrel 42. Figure 7 and Figure 8 As shown, the internal channel 44 is constructed in the first cylinder 41, the inner cavity 45 is constructed in the second cylinder 42, and the annular flange 43 can be constructed at the end of the second cylinder 42, as shown in FIG. Figure 7 and Figure 8 As shown, during implementation, one side surface of the annular flange 43 may be flush with the end surface of the second cylinder 42 .

[0060] During implementation, since the optical fiber array module 2 generally has a plurality of optical fibers 22 arranged in an array, so that the entire optical fiber array module 2 is a flat structure, accordingly, the first cylinder 41 may also be preferably constructed as a flat structure, and the internal channel 44 may also be constructed as a flat structure, so as to facilitate the insertion of the optical fiber array module 2. At the same time, the optical window 31 is adapted to the optical fiber array module 2, so that the optical channel 32 of the optical window 31 also generally presents a flat structure, therefore, accordingly, the second cylinder 42 and the inner cavity 45 may both be preferably constructed as a flat structure, so as to better adapt to the optical window boss 34, which is beneficial to saving materials and costs. As an example, when the optical window boss 34 is constructed as a rectangular parallelepiped structure, accordingly, the inner cavity 45 is also constructed as a rectangular parallelepiped structure, such as Figure 7 , Figure 8 and Fig.11As shown, to facilitate smooth insertion of the light window boss 34.

[0061] Based on this, as an example, this embodiment also provides an 800G DR8 optical module, in which the optical fiber array module 2 includes an upper constraint plate 23, a lower constraint plate 24, and four optical fibers 22 clamped between the upper constraint plate 23 and the lower constraint plate 24. Figure 6 As shown, the optical module includes four optical components, and the four optical components respectively include an optical fiber array module 2, a sleeve 4 and a packaging box 3. One side of the packaging box 3 is formed with a light window, wherein the packaging boxes 3 in two optical components respectively package light transmitting sub-modules, and the packaging boxes 3 in the other two optical components respectively package light receiving sub-modules, and the two packaging boxes 3 for packaging light transmitting sub-modules are arranged side by side, and the two packaging boxes 3 for packaging light receiving sub-modules are arranged side by side, and the packaging boxes 3 for packaging the light transmitting sub-modules and the packaging boxes 3 for packaging the light receiving sub-modules are arranged overlapping, as shown in FIG. Figure 9-11 As shown, the optical fiber array modules 2 in each optical component are respectively inserted into the sleeves 4 and sealed by glue 5, and each sleeve 4 is welded to the corresponding packaging box 3, as shown in FIG. Figure 9-11 As shown, it is also sealed by glue 5, such as Figure 9-11 As shown, an 800G DR8 optical module suitable for cross-media applications can be realized.

[0062] As another example, this embodiment also provides another 800G DR8 optical module, in which the optical module, the optical fiber array module 2 includes an upper constraint plate 23, a lower constraint plate 24 and eight optical fibers 22 clamped between the upper constraint plate 23 and the lower constraint plate 24. At the same time, the optical module includes two optical components, and the two optical components respectively include a fiber array module 2, a sleeve 4 and a packaging box 3. One side of the packaging box 3 is formed with a light window. The packaging boxes 3 in the two optical components respectively encapsulate an optical transmitting sub-module and an optical receiving sub-module. The packaging boxes 33 in the two optical components are arranged in an overlapping manner. The optical fiber array modules 2 in the two optical components are respectively inserted into the sleeves 4 and sealed by glue 5. Each sleeve 4 is respectively welded to the corresponding packaging box 3 and is also sealed by glue 5, so that an 800G DR8 optical module suitable for cross-media applications can also be realized.

[0063] Example 3

[0064] To solve the problem of facilitating welding, the main difference between the present embodiment 3 and the above-mentioned embodiments is that, in the optical module provided in the present embodiment, a side surface of the annular flange 43 for contacting the packaging box 3 is further structured with an annular boss 46, such as Figure 12-14 As shown, the annular boss 46 is used to contact the side wall of the packaging box 3.

[0065] In this embodiment, an annular boss 46 is arranged on one side of the annular flange 43 so that the side is not flush, so that the annular boss 46 can be used to contact the side wall of the packaging box 3 during welding. At this time, other areas of the side do not contact the side wall of the packaging box 3 and have a certain gap. Such a structural design is convenient for laser hot melt welding and laser penetration welding, and is conducive to achieving better welding effects. For example, during laser hot melt welding, the annular boss 46 can play a role similar to solder and be directly welded to the side wall of the packaging box 3. Since the annular boss 46 is an annular structure with a certain width, a ring-shaped and uniform weld can be formed along the circumferential direction of the light window 31, which is conducive to more reliable welding and easier gluing to achieve a better sealing effect.

[0066] In practice, the shape of the annular boss 46 may be adapted to the shape of the annular flange 43, such as Figure 12-14 It is understood that, in practice, the annular boss 46 can be constructed not only on the side of the annular boss 46, but also when the annular boss 46 is constructed on the end of the sleeve 4, the side of the annular boss 46 can be flush with the end surface of the second cylinder 42. At this time, at least a part of the annular boss 46 can also be constructed on the end of the sleeve 4 (second cylinder 42).

[0067] During implementation, the thickness of the annular boss 46 can be determined according to actual needs. For example, the thickness of the annular boss 46 can be preferably set to 0.5-5 mm. Of course, depending on actual needs, the thickness of the annular boss 46 can also be 6 mm, 7 mm, 8 mm, 9 mm, etc., and examples will not be given here one by one.

[0068] Example 4

[0069] The main difference between this embodiment 4 and the above embodiments is that in the optical module provided in this embodiment, glue is filled between the optical fiber array module 2 and the lens 33. The glue can be a refractive index matching glue, so that the glue can be used to fill the space between the optical fiber array module 2 and the lens 33 to eliminate the gap, so that even if other media penetrate into the sleeve 4, they will not penetrate between the optical fiber array module 2 and the lens 33, thereby not interfering with the transmission of signals and not affecting the performance of the optical module, making the application of the optical module in cross-media applications more reliable.

[0070] The above description is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention.

Claims

1. An optical component suitable for cross-media applications, comprising an optical fiber array module and a packaging box, wherein the packaging box is provided with an optical window, the optical window comprising an optical channel and a lens for closing the optical channel, wherein: It also includes a sleeve with an internal channel, one end of the sleeve is sealed and connected to the packaging box, the sleeve covers the optical channel, the internal channel corresponds to the optical channel, the optical fiber array module is inserted into the sleeve, and the optical fiber array module corresponds to the optical channel.

2. The optical component suitable for cross-media applications according to claim 1, characterized in that: The sleeve is a metal sleeve.

3. The optical component suitable for cross-medium applications according to claim 2, characterized in that: The sleeve is welded to the side wall of the packaging box, and the gap between the sleeve and the packaging box is sealed by filling glue.

4. The optical component suitable for cross-media applications according to claim 1, characterized in that: Glue is filled between the optical fiber array module and the sleeve to achieve sealing.

5. The optical component suitable for cross-medium applications according to any one of claims 1 to 4, characterized in that: The outer side of the sleeve is configured with a circle of annular flange protruding outwards, and the annular flange is used to fit the side wall of the packaging box.

6. The optical component suitable for cross-media applications according to claim 5, characterized in that: An annular boss is formed on a side surface of the annular flange for contacting the packaging box, and the annular boss is used to contact the side wall of the packaging box.

7. The optical component suitable for cross-media applications according to claim 5, characterized in that: The sleeve comprises a first barrel adapted to the optical fiber plug assembly in the optical fiber array module and a second barrel adapted to the optical channel. The annular flange is constructed at one end of the first barrel, and the second barrel is connected to the end.

8. The optical component suitable for cross-media applications according to claim 5, characterized in that: The annular flange is configured at one end of the sleeve.

9. The optical component suitable for cross-media applications according to claim 8, characterized in that: The light window also includes a light window boss arranged on the outside of the packaging box, the light channel runs through the light window boss, one end of the sleeve is configured with an inner cavity adapted to the light window boss, the annular flange is configured at the end, the internal channel is connected to the inner cavity, the light window boss is inserted into the inner cavity, the sleeve covers the light window boss, and the optical fiber array module is inserted into the internal channel.

10. The optical component suitable for cross-medium applications according to claim 9, characterized in that: The sleeve includes a first cylinder adapted to the optical fiber array module and a second cylinder adapted to the light window boss, the first cylinder is connected to the second cylinder, the internal channel is constructed in the first cylinder, the inner cavity is constructed in the second cylinder, and the annular flange is constructed at the end of the second cylinder.

11. The optical component suitable for cross-media applications according to claim 1, characterized in that: The optical fiber array module includes an optical fiber plug assembly connected to the optical fiber, the optical fiber plug assembly is inserted into the sleeve and corresponds to the optical channel; Alternatively, the optical fiber array module includes an upper constraint plate, a lower constraint plate, and at least one optical fiber, and the optical fiber is clamped between the upper constraint plate and the lower constraint plate.

12. An optical module suitable for cross-media applications, characterized in that: It comprises a base and a cover plate, and also comprises the optical component described in any one of claims 1-11, the cover plate is arranged on the base, an assembly cavity is formed between the cover plate and the base, the optical component is arranged in the assembly cavity, and an optical sub-module is encapsulated in the packaging box.

13. The optical module suitable for cross-medium applications according to claim 12, characterized in that: It comprises at least two optical components, and the packaging boxes of the optical components are arranged overlappingly.

14. The optical module suitable for cross-medium applications according to claim 13, characterized in that: The invention comprises two optical components, each of which comprises four optical fiber array modules, four sleeves and a packaging box. An optical fiber is arranged in the optical fiber array module, and four optical windows are arranged on one side of the packaging box. An optical transmitting submodule and an optical receiving submodule are arranged in the packaging boxes of the two optical components respectively. The packaging boxes of the two optical components are overlapped in the height direction. The four optical fiber array modules of the optical components are respectively inserted into the four sleeves, and the four sleeves of the optical components are respectively sealed and connected to the corresponding packaging boxes. Or, comprising four optical components, the four optical components respectively comprising an optical fiber array module, a sleeve and a packaging box, the optical fiber array module has four optical fibers arranged in an array, one side of the packaging box is provided with an optical window, wherein the packaging boxes in two optical components respectively package optical transmitting sub-modules, and the packaging boxes in the other two optical components respectively package optical receiving sub-modules, the two packaging boxes for packaging the optical transmitting sub-modules are arranged side by side, the two packaging boxes for packaging the optical receiving sub-modules are arranged side by side, and the packaging box for packaging the optical transmitting sub-modules is arranged overlapping with the packaging box for packaging the optical receiving sub-modules, the optical fiber array modules in each optical component are respectively inserted into the sleeves, and the sleeves of each optical component are respectively sealed and connected to the corresponding packaging boxes; Or, it includes two optical components, each of which includes a fiber array module, a sleeve and a packaging box. Eight optical fibers are arranged in an array in the fiber array module, and a light window is arranged on one side of the packaging box. The packaging boxes in the two optical components respectively package a light transmitting sub-module and a light receiving sub-module. The packaging boxes in the two optical components are overlapped and arranged. The fiber array modules in the two optical components are respectively inserted into the sleeves, and the sleeves of the two optical components are respectively sealed and connected to the corresponding packaging boxes.

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